Fullcast

Fullcast Copy.ai Workflows API

The Copy.ai Workflows API, acquired by Fullcast in October 2025 and documented on Fullcast's own support host as Fullcast Copy.ai. Programmatically starts GTM workflow runs, polls run status, and registers webhooks for workflow lifecycle events. Authenticated with a workspace API key sent in the x-copy-ai-api-key header.

GitHub

Documentation

📖
APIReference
https://support.fullcast.com/apidocs/api-references.md
📖
GettingStarted
https://support.fullcast.com/apidocs/quick-start-guide.md
📖
Authentication
https://support.fullcast.com/copy-ai/docs/api-key-management.md

Other Resources

🔗
Webhooks
https://raw.githubusercontent.com/api-evangelist/fullcast/refs/heads/main/asyncapi/fullcast-copy-ai-webhooks.yml

API entry from apis.yml

apis.yml Raw ↑ 
name: Fullcast Copy.ai Workflows API
description: The Copy.ai Workflows API, acquired by Fullcast in October 2025 and documented on Fullcast's
  own support host as Fullcast Copy.ai. Programmatically starts GTM workflow runs, polls run status, and
  registers webhooks for workflow lifecycle events. Authenticated with a workspace API key sent in the
  x-copy-ai-api-key header.
humanURL: https://support.fullcast.com/apidocs/quick-start-guide.md
baseURL: https://api.copy.ai/api
tags:
- Workflows
- Generative AI
- Webhooks
properties:
- type: APIReference
  url: https://support.fullcast.com/apidocs/api-references.md
- type: GettingStarted
  url: https://support.fullcast.com/apidocs/quick-start-guide.md
- type: Webhooks
  url: asyncapi/fullcast-copy-ai-webhooks.yml
- type: Authentication
  url: https://support.fullcast.com/copy-ai/docs/api-key-management.md